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Optimisation of field flatness and depth-dose for therapy electron beams.

Physics in medicine and biology (1981-05-01)
J R Marbach, P R Almond
ABSTRACT

Curves relating beam energy, scattering foil thickness, central-axis depth-dose, and beam flatness have been generated using data taken on a Siemens 200A betatron. The curve set allows a single combination of tungsten foil thickness and electron beam energy to be chosen that will provide the optimum depth-dose distribution and sufficient field flatness for any specific clinical requirement.

MATERIALS
Product Number
Brand
Product Description

Tungsten, foil, 100x100mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.1mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.2mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.3mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.5mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 1.0mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 2.0mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 0.1mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 0.5mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 1.0mm, as rolled, 99.95%
Tungsten, foil, 200x200mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 200x200mm, thickness 0.1mm, as rolled, 99.95%
Tungsten, foil, 200x200mm, thickness 0.2mm, as rolled, 99.95%
Tungsten, foil, 200x200mm, thickness 0.3mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.1mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.2mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.3mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.5mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 1.0mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 2.0mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 3.0mm, as rolled, 99.95%
Tungsten, foil, 0.1m coil, thickness 0.076mm, coil width 2mm, as rolled, 99.95%
Tungsten, foil, 0.2m coil, thickness 0.016mm, coil width .36mm, as rolled, 99.95%
Tungsten, foil, 0.2m coil, thickness 0.025mm, coil width .7mm, as rolled, 99.95%
Tungsten, foil, 0.2m coil, thickness 0.025mm, coil width 1mm, as rolled, 99.95%